If `90^(@) lt alpha lt 180^(@) and 270^(@) lt beta lt 360^(@)`, then which of the following cannot be true?

If 0 lt x lt 45^(@) and 45^(@) lt y lt 90^(@) , then which one of the following is correct ?

If 0 lt theta lt phi lt 90^(@) , then which one of the following correct ?

If cos alpha = -12//13 , cot beta = 24//7 , 90^(@) lt alpha lt 180^(@) and 180^(@) lt beta lt 270^(@) , then the quadrant in which alpha + beta lies

If 0 lt x lt 5 and 1 lt y lt 2 , then which of the following is true ?

In the previous problem ,find the magnitude of change in velocity if (a) 90^(@) lt theta lt 180^(@) , (b) 180^(@) lt theta lt 270^(@) and (c ) 270^(@) lt theta lt 360^(@) .

If sin alpha + sin beta = 0 = cos alpha + cos beta . Where 0 lt beta lt alpha lt 2 pi , then which one of the following is correct?

If 180^(@) lt A lt 270^(@) , 270^@ lt B lt 360^(@) and sin A = -5//13 , sec B=5//4 , then sin A cos B+ cos A sin B=

If cos theta =(5)/(13) and 270 ^(@) lt theta lt 360^(@) , evaluate sin ( theta //2) and cos ( theta//2)

If 180^(@) lt theta lt 270^(@) , tan theta = 5//12 , " then " cos 3 theta =

If a, b and c are different integers such that a lt b lt c lt 0 , then which of the following statements is true ?